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A298925 Number of n X n 0..1 arrays with every element equal to 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 0
0, 1, 1, 11, 94, 955, 15163, 491338, 19329083, 1185260593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Diagonal of A298930.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

..0..0..1..0..0. .0..0..1..0..0. .0..0..1..0..0. .0..0..1..0..0

..0..1..0..1..0. .0..1..0..1..0. .1..0..1..1..0. .0..1..1..0..1

..1..1..0..1..0. .0..1..1..1..0. .1..1..0..0..1. .1..0..0..1..1

..0..1..0..1..0. .0..1..0..0..1. .0..1..1..1..0. .1..0..1..1..0

..0..0..1..0..0. .0..0..1..1..1. .0..0..0..0..0. .1..1..0..0..0

CROSSREFS

Cf. A298930.

Sequence in context: A016150 A115203 A164547 * A016203 A241606 A326349

Adjacent sequences:  A298922 A298923 A298924 * A298926 A298927 A298928

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 29 2018

STATUS

approved

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Last modified September 22 05:03 EDT 2021. Contains 347605 sequences. (Running on oeis4.)